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From: raja@bombay.cps.msu.edu (Narayan S. Raja)
Newsgroups: comp.unix.questions
Subject: Re: Can UNIX pipe connections be compiled?
Message-ID: <1991Jan19.072755.3291@msuinfo.cl.msu.edu>
Date: 19 Jan 91 07:27:55 GMT
References: <1991Jan18.193234.216@rucs.runet.edu> <1991Jan18.230530.9331@convex.com>
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Organization: PRIP Lab, Comp. Sci. Dept., MSU
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In article <1991Jan18.230530.9331@convex>, (Tom Christiansen) writes:
< From the keyboard of dana@rucs.runet.edu (Dana Eckart):
< :Does there exist a piece of software (or is it even possible) to compile
< :a pipe?  In particular, suppose you had 
< :
< :	ls -l | fgrep "Dec" | cut -f 4
< :
< :is there anyway to compile the above pipeline so that the pieces can
< :communicate more quickly.  I am looking for a general solution, not
< :one that works only for the above example.

< In general, the answer to whether things like this can be automagically
< compiled is no, because you can't know what all the pieces are a priori.


However, wouldn't pipes be speeded up considerably
on a Sun by mounting /tmp as a tmpfs filesystem
(i.e. memory-based filesystem)?  Apparently tmpfs
is *really* quick under SunOS 4.1.1.

Pardonnez-moi if this is a dumb suggestion.


Narayan Sriranga Raja.